Mercurial > hg > IndexMetaContextualizer

annotate src/main/java/de/mpiwg/indexmeta/services/DataProvider.java @ 8:9ce7979fd037

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Implementation Data Provider
author Jorge Urzua <jurzua@mpiwg-berlin.mpg.de>
date Wed, 24 Apr 2013 10:34:23 +0200
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1 package de.mpiwg.indexmeta.services;
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2
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3 import java.util.ArrayList;
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4 import java.util.List;
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6 import org.apache.log4j.Logger;
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8 import de.mpiwg.indexmeta.bo.Contextualization;
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10 public class DataProvider {
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12 protected static Logger logger = Logger.getLogger(DataProvider.class);
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14 public DataProvider(){
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15 logger.info("Starting DataProvider *********");
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16 }
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18 private PersistentService ps = new PersistentService();
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20 public List<Contextualization> getCtxByIndexMetaId(String indexMetaId){
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21 //QuadKey(indexMetaId, type, remoteId, id)
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22 return ps.getCtxMap().getValuesByFirstKey(indexMetaId);
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23 }
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25 public List<Contextualization> getCtxByType(String type){
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26 //QuadKey(indexMetaId, type, remoteId, id)
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27 return ps.getCtxMap().getValuesBySecondKey(type);
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28 }
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30 public List<Contextualization> getCtxByRemoteId(String remoteId){
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31 //QuadKey(indexMetaId, type, remoteId, id)
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32 return ps.getCtxMap().getValuesByThirdKey(remoteId);
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33 }
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35 public Contextualization getCtx(String indexMetaId, String elementId) throws Exception{
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36 List<Contextualization> rs = new ArrayList<Contextualization>();
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38 for(Contextualization ctx : ps.getCtxMap().getValuesByFirstKey(indexMetaId)){
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39 if(ctx.getElementId().equals(elementId)){
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40 rs.add(ctx);
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41 }
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42 }
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43 if(rs.isEmpty())
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44 return null;
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45 else if(rs.size() == 1)
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46 return rs.get(0);
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47 else
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48 throw new Exception("For indexMetaId=" + indexMetaId + " and elementId=" + elementId + " there are more than one element in DB.");
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49 }
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51 public Contextualization getCtx(Long id){
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52 return ps.getCtxMap().getValuesByOwnKey(id);
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53 }
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55 public void saveCtx(Contextualization ctx){
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56 ps.saveCtx(ctx);
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57 }
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59 }